CERN Accelerating science

CMS Note
Report number nucl-ex/0703001 ; CMS-CR-2007-014 ; CMS-CR-2007-014
Title Measuring Photons and Neutrons at Zero Degrees in CMS
Related titleCOMPACT MUON SOLENOID
Author(s)

Grachov, Oleg A. (Kansas U.) ; Metzler, B. (Kansas U.) ; Murray, M. (Kansas U.) ; Snyder, J. (Kansas U.) ; Stiles, L. (Kansas U.) ; Wood, J. (Kansas U.) ; Zhukova, V. (Kansas U.) ; Beaumont, W. (Antwerp U.) ; Ochesanu, S. (Antwerp U.) ; Debbins, P. (Iowa U.) ; Ingram, D. (Iowa U.) ; Norbeck, E. (Iowa U.) ; Onel, Y. (Iowa U.) ; Garcia, E. (Illinois U., Chicago)

Affiliation (Univ. Antwerpen, Wilrijk, Belgium) ; (Illinois U., Chicago) ; (Univ. Iowa, Iowa City, IA, USA) ; (Univ. Kansas, Lawrence, KS, USA)
Publication 2007
Imprint 29 Apr 2007
Number of pages 6
In: Int. J. Mod. Phys. E 16 (2007) 2137-2142
In: 19th International Conference on Ultra-relativistic Nucleus-nucleus Collisions : Poster Session, Shanghai, China, 14 - 20 Nov 2006, pp.2137-2142
DOI 10.1142/S0218301307007581
Subject category Particle Physics - Experiment ; Detectors and Experimental Techniques
Accelerator/Facility, Experiment CERN LHC ; CMS
Free keywords CALORIMETRY
Abstract The CMS Zero Degree Calorimeters, ZDCs, will measure photons and neutrons emitted with |eta|> 8.6 from Pb+Pb, p+Pb and p+p collisions at sqrt(Snn)=5.5, 8.8 and 14 TeV respectively. The calorimeter consists of an electromagnetic part segmented in the horizontal direction and an hadronic part segmented into four units in depth. In addition CMS will have access to data from a segmented shower maximum detector being built for luminosity measurements. We will present detailed results from tests beam measurements taken at the CERN SPS. These data will be used to extrapolate the utility of the ZDCs to measure photons, and possibly pi0s in p+p and ultra-peripheral heavy-ion collisions. Data from the hadronic section can be used to estimate the number of participants in heavy ion-collisions. In addition we will discuss plans to use the detector to measure the reaction plane, thereby extending the sensitivity of the central detectors in CMS.
Copyright/License Preprint: (License: CC-BY-4.0)

Corresponding record in: Inspire
Email contact: [email protected]


 Element opprettet 2007-03-16, sist endret 2023-03-14


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